Growth of Isognomon alatus (Flat Tree Oyster) in acidified waters - Akita, Lailah Gifty;Andersson, Andreas
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The Flat Tress oyster, Isognomon alatus (Gmelin, 1791) is a sessile intertidal bivalve of coastal ecosystem. There is great concern over future effect of ocean acidification (high carbon dioxide concentration, lowering of ocean pH) on calcifying marine organisms (e.g. oysters). We examined how the ocean's present and projected lowering of pH will impact on the growth of Isognomon alatus. Isognomon alatus cultured under laboratory controlled projected 21st century pH levels (~7.8) demonstrated thinning of shell, decrease in weight and negative growth rates (-0.56 + 0.36 mg g-1day-1). In…mehr

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Produktbeschreibung
The Flat Tress oyster, Isognomon alatus (Gmelin, 1791) is a sessile intertidal bivalve of coastal ecosystem. There is great concern over future effect of ocean acidification (high carbon dioxide concentration, lowering of ocean pH) on calcifying marine organisms (e.g. oysters). We examined how the ocean's present and projected lowering of pH will impact on the growth of Isognomon alatus. Isognomon alatus cultured under laboratory controlled projected 21st century pH levels (~7.8) demonstrated thinning of shell, decrease in weight and negative growth rates (-0.56 + 0.36 mg g-1day-1). In contrast, I. alatus cultured within coastal waters of Mangrove Bay Estuary, Bermuda, under a ambient pH gradient (~8.1) displayed weight gain and positive growth (0.26 + 0.23 mg g-1day-1) although exposure to lower pH levels (~7.4) during low tide. The results indicate the sensitivity of oysters to acidified waters. The book provides understanding on the survival of oysters in acidified coastal waters and mangrove lagoons. The book is useful for oceanographers, biologist, ecologist and environmentalist and aquaculturist.
Autorenporträt
Lailah Gifty Akita received MPhil in Oceanography at the University of Ghana and Bsc. in Natural Resources at Kwame Nkrumah University of Science and Technology.Dr. Andreas Andersson earned PhD and M.S in Chemical Oceanography at the University of Hawaii at Manoa. He obtained B.S.in Marine Biology from Hawaii Pacific University.